Design and Calculation of a Cable Type of Displacement Sensor

2013 ◽  
Vol 475-476 ◽  
pp. 466-469
Author(s):  
Hui Xian Han ◽  
Xiong Hua Guo
Keyword(s):  
Wear Resistance ◽  
Control System ◽  
Experimental Verification ◽  
Measurement Precision ◽  
Displacement Sensor ◽  
Design Calculation ◽  
Position Measurement ◽  
High Measurement ◽  
System Length ◽  
Selection Of

The article firstly introduced the work principle of a cable type of displacement sensor. Then it analyzed that design, calculation and selection of the scroll spring and the rope which was used for the sensor designed. Experimental verification shows: with high measurement precision and good wear resistance, the designed sensor has a good value of research and application. The cable displacement sensor designed can be used in engineering machinery, automatic control system length measurement and position measurement.

Compensation of Measurement Precision for Three-Dimensional Position Measurement Device Based on Disturbance Observer

2011 ◽  
Vol 23 (1) ◽  
pp. 75-82
Author(s):  
Toshiaki Matsumoto ◽  
◽  
Satoru Takahashi
Keyword(s):  
Control System ◽  
Control Systems ◽  
Disturbance Observer ◽  
Three Dimensional ◽  
Measurement Precision ◽  
Significant Issue ◽  
Position Measurement ◽  
Positioning Precision ◽  
Unknown Disturbances ◽  
Series Of Experiments

Improvements in measurement precision will constitute a significant issue in designing control systems formeasurement devices. Specifically, positioning precision may be decreased if unpredicted disturbances from the environment are not taken into account. In this paper, we first estimate unknown disturbances based on the disturbance observer, then design control systems which can reduce the effects of such disturbances to propose a control system capable of compensating for any decreases in measurement precision due to such disturbances, and finally demonstrate the effectiveness of the proposed control system through a series of experiments.

DESIGN, SIMULATION AND IMPLEMENTATION MONITORING SYSTEM FOR SYSTEM CONTROL C4 FEEDING PUMP FOR FEED VAPORIZATION IN THE BUTADIENE PLANT

2020 ◽  
Vol 1 (1) ◽  
pp. 31-35
Author(s):  
Fahmi Yunistyawan ◽  
Yunistyawan J Berchmans ◽  
Gembong Baskoro
Keyword(s):  
Motor Control ◽  
Control System ◽  
Field Operator ◽  
System Control ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Software And Hardware ◽  
Discharge Pressure ◽  
Selection Of

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.

scholarly journals Collective Losses of Low Power Cage Induction Motors—A New Approach

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1749
Author(s):  
Elzbieta Szychta ◽  
Leszek Szychta
Keyword(s):  
Control System ◽  
Experimental Studies ◽  
Complex Problem ◽  
Accurate Estimation ◽  
New Approach ◽  
Water Pumping ◽  
Efficiency Control ◽  
Interacting Systems ◽  
Cage Induction Motor ◽  
Selection Of

Energy efficiency of systems of water pumping is a complex problem since efficiency of two distinct interacting systems needs to be combined: water and power supply. This paper introduces a non-intrusive method of calculating the so-called “collective losses” of a cage induction motor. The term “collective losses”, which the authors define, allows for accurate estimation of motor efficiency. Control system of a pump determines operating point of a pumping station, and thus its efficiency. General estimated performance characteristics of a motor, components of a control system, are assumed to serve selection of a range of pumping speed variations. Rotational speed has a direct effect on motor load torque, pump power and head, and thus on motor performance. Hellwig’s statistical method was used to specify characteristics of estimated collective losses on the basis of experimental studies of 21 motors rated at up to 2.2 kW. The results of simulations and experiments are used to verify validity and efficiency of the suggested method. The method is non-intrusive, simple to use, and requires minimum data.

Design of Obstacle Avoidance Detection Based on Substation Intelligent Inspection Robot

2013 ◽  
Vol 748 ◽  
pp. 695-698
Author(s):  
Hai Peng Wang ◽  
Yong Sun ◽  
Peng Xiao ◽  
Yi Qing Luan
Keyword(s):  
Real Time ◽  
Obstacle Avoidance ◽  
Detection System ◽  
Measurement Precision ◽  
Ultrasonic Signal ◽  
System Software ◽  
Ultrasonic Sensors ◽  
Inspection Robot ◽  
High Measurement ◽  
Environmental Requirements

The obstacle avoidance system is an important part of the intelligent inspection robot. According to the special environmental requirements for substation inspection robot, the inspection robot obstacle avoidance detection system was designed. The system takes MCU as the controller core, selects many sets of ultrasonic sensors to detect the obstacle information around the robot, designs the transmitting and receiving circuit of the ultrasonic signal, and completes the system software program. In consideration of the substations effect of EMI to the electronic equipments, when designing circuit, using a large of filter circuit, improve systems anti-interference performance, realize real-time and veracity of measurement. Using on substation shows that the system run steadily, have high measurement precision, its important for improving the robot using on substation.

scholarly journals Selection of the chemical composition of steels and their thermal hardening mode using a computer program

2021 ◽  
pp. 59-65
Author(s):  
D. M. Berdiev ◽  
M. A. Uмаrоvа ◽  
A. A. Yusupov
Keyword(s):  
Wear Resistance ◽  
Chemical Composition ◽  
Computer Program ◽  
Sliding Friction ◽  
Thermal Hardening ◽  
Abrasive Particles ◽  
Density Of Dislocations ◽  
Heat Treated ◽  
Final Tempering ◽  
Selection Of

The relationships between the parameters of the structure of heat‑treated steels and their abrasive wear resistance are established. At all temperatures of the final tempering of hardened steel, there is a direct relationship between its structure parameters (the number of elements in a solid solution, the density of dislocations, the size of cementite particles and the intercementite distance) and wear resistance when sliding friction against loose abrasive particles. A computer program has been developed to select the chemical composition of the steel grade and methods of thermal hardening in order to ensure the required wear resistance.

scholarly journals Selection of acoustic modeling unit for Tibetan speech recognition based on deep learning

2021 ◽  
Vol 336 ◽  
pp. 06014
Author(s):  
Baojia Gong ◽  
Rangzhuoma Cai ◽  
Zhijie Cai ◽  
Yuntao Ding ◽  
Maozhaxi Peng
Keyword(s):  
Deep Learning ◽  
Speech Recognition ◽  
Experimental Verification ◽  
Character Segmentation ◽  
Acoustic Modeling ◽  
Overall Performance ◽  
Primary Problem ◽  
Selection Of

The selection of the speech recognition modeling unit is the primary problem of acoustic modeling in speech recognition, and different acoustic modeling units will directly affect the overall performance of speech recognition. This paper designs the Tibetan character segmentation and labeling model and algorithm flow for the purpose of solving the problem of selecting the acoustic modeling unit in Tibetan speech recognition by studying and analyzing the deficiencies of the existing acoustic modeling units in Tibetan speech recognition. After experimental verification, the Tibetan character segmentation and labeling model and algorithm achieved good performance of character segmentation and labeling, and the accuracy of Tibetan character segmentation and labeling reached 99.98%, respectively.

scholarly journals EVALUATION AND SELECTION OF THE METHOD FOR CONTROL SYSTEM THE WIRE TENSION IN CUT-OUT ELECTRIC EROSION MACHINES

2021 ◽  
pp. 47-50
Author(s):  
M. N. Buza ◽  
N. O. Butusov ◽  
A. S. Voronin ◽  
A. G. Alekhin
Keyword(s):  
Control System ◽  
Wire Tension ◽  
Electric Erosion ◽  
The Wire ◽  
Selection Of

Variants of the electrode tension mechanism in an electric erosion machine are considered in order to ensure a quick change of the electrode thread and the required degree of tension.

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